SystemAir FDS-3G H0-OF Series, Manual

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Installation 3 - Soft
Installation into a Soft Crossing with fire resistive coating
The supporting construction opening must be prepared as depicted. Opening surfaces must be even and cleaned off.
The flexible wall opening must be reinforced as per the standards for plasterboard walls. The opening dimensions are
driven by the nominal dimensions of the damper with added clearance. For rectangular dampers, the opening will be
with the dimensions of W1 and H1.
Prepare mineral wool installation segments (F5) with thickness of the opening height. First apply a suitable fire
resistive coating (F6) onto the damper at the place of its future placement, assemble and glue the filling of the future
installation with the same fire resistive coating. After the fire resistive coating has dried the damper along with the
filling are ready for installation.
Apply the same fire resistive coating (F6) onto the internal surface of the wall opening. Also apply the fire resistive
coating on the external surface of the filling glued on the damper surface. Immediately after the fire resistive coating is
applied, place the damper into the wall opening. The damper blade must be located in the supporting structure.
After inserting the damper into the opening and fixing it using the bendable hangers and suitable screws (F1), apply
the same fire resistive coating (F6), at least 2 mm thick and 100 mm wide, on the exposed filling and wall edges
evenly from both sides. Do not apply this layer in the place where the mechanism is located, inspection openings and
manufacturer labels.
It is necessary to fix the dampers installed into a wall using four steel L-profiles (F7) from above and below. Anchor the
profiles to the wall on each end using at least one screw (F1) and self-drilling screws (F8) against the damper with a
maximum of 200 mm gaps.
Dampers installed into a ceiling need to be fixed onto the ceiling using two steel L-profiles (F7) from above (applies for
all types). Anchor the profiles to the ceiling on each end using at least one screw (F1) and selfdrilling screws (F8)
against the damper with a maximum of 200 mm gaps.
If needed, uncover and clean the damper after installation.
Check the damper’s functionality
Installation - Standard Distances
According to the standard EN 1366-2, the minimum distance from the wall or ceiling to the damper body is 75 mm. For
multiple crossings through a fire resistive wall the minimum distance between two damper bodies is 200 mm. This
applies for distances between the damper and a nearby foreign object crossing the fire resistive wall.
Installation - Smaller Distances
The distance between individual fire dampers can be reduced to 60 mm, measured from surface to surface of the
housing and the distance between the surface of the damper installed in the duct and the adjacent supporting
construction (wall/floor) can be reduced to 40 mm.
Installation in a Wall thinner than tested
Installation in a thinner wall is allowed under the condition that an additional layer/layers of fire protective board are
fixed to the surface of the wall in order to achieve the same length of damper penetration seal as was tested. The
minimum width of added boards around the damper is 200 mm. In addition, the alternative thinner wall should be
classified in accordance with EN 13501-2:2007 + A1: 2009 for fire resistance required for product application. For a
protruding wall, the additional layers must be fixed on the steel supporting construction of the wall.